When God created the first man, Adam, He gave him a pure mind and heart - the colour of white. When Eve was created from the ribs of Adam, she too was the colour of white.
But alas, through the trickery of the devil, the first sin of man transpired when the forbidden fruit was eaten. In God's eyes, Adam and Eve were now black.. And for the longest time, man roamed the earth, carrying the sins of their fathers and yet adding sins to burden. The black plaque spread rapidly, reaching out to the corners of earth.
Till one day, God sent His only son, Jesus Christ, down to earth to bear the sins of man. Christ endured much suffering, to the extent of being ignored for a time by God Himself, and was eventually sacrificed so the sins of man may die with him. Those who believed in Christ, both past and present, were once again cleansed white.
So the world is now speckled, with white scattered amidst the black. While men on earth may see in shades of gray, God sees in absolute binary. There is no place in the kingdom of God for the black, but only pure white hearts may enter. And the only way to obtain a white heart is to have faith in God, and to accept Christ's sacrifice that cleanses the stains of black.
May God grant faith to the ones still in the zones of black, and continue to preserve the striving hearts of white.